Where and how do I use the string resource?

Can I use them inside a topic?

Could someone show me an example of using the string resource

I'm trying to create a topic that is formatted and styled and will be used to display a set of featured items. I would like to be able just to change the string resource (featureItem1) and not have to edit the topic each time. That would be safer from accidental typos.

Are there other ways to provide the string inside the store code?

Thanks..